/*
 * sound.h
 *
 * Sound class.
 *
 * Portable Windows Library
 *
 * Copyright (c) 1993-1998 Equivalence Pty. Ltd.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Portable Windows Library.
 *
 * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
 *
 * Portions are Copyright (C) 1993 Free Software Foundation, Inc.
 * All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * $Revision$
 * $Author$
 * $Date$
 */


///////////////////////////////////////////////////////////////////////////////
// PSound

  public:
    // Overrides from class PChannel
    virtual PString GetName() const;
      // Return the name of the channel.

      
    virtual PBoolean Read(void * buf, PINDEX len);
      // Low level read from the channel. This function will block until the
      // requested number of characters were read.

    virtual PBoolean Write(const void * buf, PINDEX len);
      // Low level write to the channel. This function will block until the
      // requested number of characters were written.

    virtual PBoolean Close();
      // Close the channel.


    PString GetErrorText(ErrorGroup group = NumErrorGroups) const;
    // Get a text form of the last error encountered.

    PBoolean SetFormat(const PWaveFormat & format);

    PBoolean Open(const PString & device, Directions dir,const PWaveFormat & format);
    // Open with format other than PCM

  protected:
    PString     deviceName;
    Directions  direction;
    HWAVEIN     hWaveIn;
    HWAVEOUT    hWaveOut;
    HANDLE      hEventDone;
    PWaveFormat waveFormat;

    PWaveBufferArray buffers;
    PINDEX           bufferIndex;
    PINDEX           bufferByteOffset;
    PMutex           bufferMutex;

  private:
    PBoolean OpenDevice(unsigned id);
    PBoolean GetDeviceID(const PString & device, Directions dir, unsigned& id);

// End Of File ///////////////////////////////////////////////////////////////
